Galaxy radio drift

[Kill The Mods]

because even Silver Solder is inherently brittle and can tear traces from the board.

Seems that Pb had one set of issues (Toxicity) and now Silver with it's own set (Brittle and Melting point)- well, the days of radio may be numbered because they are so disposable nowadays...

The solder with the highest tensile strength there is, is a silver solder. SN62 / PB36 / AG02. Best solder there is for rework. Super tensile strength and low melting point which is easy on those cheap CB radio circuit boards.

 

[Larry A McClanahan]

Just about everything has become disposable. CB radios, unlike amateur radios, don't cost an arm and a leg so people are more apt to just say, the heck with it, and buy another one.

 

[Martian]

Just about everything has become disposable. CB radios, unlike amateur radios, don't cost an arm and a leg so people are more apt to just say, the heck with it, and buy another one.

Says the guy that wants to sell an expensive potted mod instead of buying a $15 heater for the part at fault: The crystal itself.

If we want to talk about mechanical stresses what do you think that lug of epoxy is going to do to it bouncing around?

Get real. It's a cheap radio with cheap parts. spending money to construct a potted block with three variable inductors and around 15 passives is completely insane.

 

[Handy Andy]

So I'll sit back and contemplate some more - keep up the good work.

I only hope someday these cheapskates at the Big 3 start reviewing their work to keep landfills from filling up with useless parts and scrap.

 

[todd chase]

Larry, is this what your trying to build?

"LC35 Galaxy All Digital 3-Band kit $70. Galaxy 2547, 939 or 959-DX but will fit any radio with the same board. change the crystal X3 with the one in the kit, unplug the NB/ANL or TONE switch and plug it into the board. Then unplug the channel selector cable and plug into the LC35, plug the LC35's cable into the main board. You're done."

Stumbled on to this on Lester's site.
http://www.lesterscustoms.com/products1

 

[Larry A McClanahan]

Larry, is this what your trying to build?

"LC35 Galaxy All Digital 3-Band kit $70. Galaxy 2547, 939 or 959-DX but will fit any radio with the same board. change the crystal X3 with the one in the kit, unplug the NB/ANL or TONE switch and plug it into the board. Then unplug the channel selector cable and plug into the LC35, plug the LC35's cable into the main board. You're done."

Stumbled on to this on Lester's site.
http://www.lesterscustoms.com/products1

No

 

[Robb]

Larry, is this what your trying to build?

"LC35 Galaxy All Digital 3-Band kit $70. Galaxy 2547, 939 or 959-DX but will fit any radio with the same board. change the crystal X3 with the one in the kit, unplug the NB/ANL or TONE switch and plug it into the board. Then unplug the channel selector cable and plug into the LC35, plug the LC35's cable into the main board. You're done."

Stumbled on to this on Lester's site.
http://www.lesterscustoms.com/products1

Looks like the proper solution to a tough problem.

Nice find.
Good on Lester.

 

[Larry A McClanahan]

I like lescomm stuff. They've got a great engineer there.

 

[Kill The Mods]

Larry, is this what your trying to build?

"LC35 Galaxy All Digital 3-Band kit $70. Galaxy 2547, 939 or 959-DX but will fit any radio with the same board. change the crystal X3 with the one in the kit, unplug the NB/ANL or TONE switch and plug it into the board. Then unplug the channel selector cable and plug into the LC35, plug the LC35's cable into the main board. You're done."

Stumbled on to this on Lester's site.
http://www.lesterscustoms.com/products1

He doesn't realize that he can't do what he wants to without a crystal swap like Lesters kit uses. Way above his "self taught radio engineer" skills. He's still trying to get the forum to design his products for him.

 

[Larry A McClanahan]

I absolutely love that ignore button.

 

[Tallman]

The two things that no one else caught was the interaction between C130 and D49. That was causing a major drift problem. The other thing that no one caught was that Ranger on the 2950 put the 5p cap across the crystal terminals to lend some stability to the Circuit. Both of which are major.

Read post number 20!

 

[Handy Andy]

I did...

Read post number 20!

Found the link...

Found these ... thought I'd be polite and condense them into blocks to help the rest of us out...





And the PDF...


Ahemn...

Enjoy the read...

 

[Larry A McClanahan]

Gee, it seems I've seen those same waveforms before. Recently.
Great post Andy.

 

[Handy Andy]

I'm not done here...

 

[Larry A McClanahan]

You are a true warrior.